317106822157 has 2 divisors, whose sum is σ = 317106822158. Its totient is φ = 317106822156.

The previous prime is 317106822101. The next prime is 317106822163. The reversal of 317106822157 is 751228601713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304233877476 + 12872944681 = 551574^2 + 113459^2 .

It is an emirp because it is prime and its reverse (751228601713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317106822157 - 2²³ = 317098433549 is a prime.

It is a super-2 number, since 2×317106822157² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317106822167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158553411078 + 158553411079.

It is an arithmetic number, because the mean of its divisors is an integer number (158553411079).

Almost surely, 2^317106822157 is an apocalyptic number.

It is an amenable number.

317106822157 is a deficient number, since it is larger than the sum of its proper divisors (1).

317106822157 is an equidigital number, since it uses as much as digits as its factorization.

317106822157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 317106822157 in words is "three hundred seventeen billion, one hundred six million, eight hundred twenty-two thousand, one hundred fifty-seven".